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Astronomers have announced the discovery of the longest known radio jet in the early universe, emanating from the quasar J1601+3102. This colossal jet stretches approximately 200,000 light-years, making it twice the length of the Milky Way. The quasar was born less than 1.2 billion years after the Big Bang, at a time when the universe was only nine percent of its current age, according to Anniek Gloudemans, a research fellow at NOIRLab.
The radio jet was initially detected by the European Low Frequency Array Telescope, and further observations were conducted using the Gemini North and Hobby Eberly telescopes. Despite the jet’s impressive length, it remains relatively small compared to others identified in later cosmic eras. Gloudemans noted that the mass of the black hole powering this jet is not extraordinary, suggesting that powerful jets can form without extremely massive black holes.
This finding not only enhances the understanding of quasars but also contributes to the broader narrative of galaxy evolution in the universe, which continues to intrigue scientists.